@-webkit-keyframes opacity-pulse { 0% { @include opacity(0.3); } 65% { @include opacity(0.9); } 100% { @include opacity(0.3); } } @-moz-keyframes opacity-pulse { 0% { @include opacity(0.3); } 65% { @include opacity(0.9); } 100% { @include opacity(0.3); } } @-ms-keyframes opacity-pulse { 0% { @include opacity(0.3); } 65% { @include opacity(0.9); } 100% { @include opacity(0.3); } }